Lubricator



Dec. l, 1931. V, R DECROW 1,834,092

LUBRICATOR Filed Nov. 24, 1926 2 Sheets-Sheet l 2 Sheets-Sheet 2 Filed Nov. 24, 1926 akkozneiji Patented Dec. 1, 1931 narran STATES R. DEGROW, 0F LOCKPOBT, NEW YORK ILUBRICATOR f n ppneauon md Nevember 24, 192e. serial N5. 150,595.

.This invention relatestoalubricator for supplying a lubricant'in the form of a liquid vapor to the combustiony chamber of a gas engine through the .fuel intake manifold, 4so that fuel and lubricant are drawn by vacuum into the firing space of the engine at thesame time, and thereby lubricatethe movement of the pistons in the cylinders, and the valves and valve stems. i

lt is the object of this invention to provide a lubricator of this character which is very simple and durable in construction, eiiicient and reliable in operation and capable of being readily installed on engines of various types but of standardconstruction.r

Figure 1 is a vertical section of a' lubricator for accomnlishinf this ur ose Whichembodf 'L D .l o f .and wickV holder, somewhat different from ies one form of my invention.'

FigureV 2 is a horizontal sectiontaken on line 2 2, Fig. 1. f l

Figure 3 is a perspective view of one form of supporting bracket and fastening, containing one feature of my invention.

Figure 4 is a perspective view showing the means for Vsupporting the wick of the for'm shown in Fig. 2.

Figure 5 is a perspective view of the rotary 'valve which controls the filling ofthe lubri cater with lubricating oil.

Figure 6 is a front elevation of the screen head or disk applied tothe outer end of the lubricant valve, shown .in Fig. 5.

Figure 7 is a perspective view of the handle which is employed in connection with the lubricant replenishing Valve shown in Figf.

Figure 8 is a similar view of the filter employed in connection with the lubricant replenishing valve. y

Figure 9 is a side elevation of the lubricant replenishingl valve :together with the screen head and handle or thumbpiece connected therewith.

Figure 10 is a perspective View of another form of supporting bracket and fasteningV which may be employed 1n connection with my invention for adjustably'connecting the body and oil reservoir and also supporting-the saine on a stationary part of the engine.

Figure 11 is a similar view showing another form of such' supporting bracket and fastening device which contains my improvement.y i

i kFigure 12 is a vertical section ,of a lubricator containing my invention and showing a form somewhat diiferent in detailfrom that illustrated'in Figs. 1 and 2:

' /Figure'l'is aY horizontal section taken on -line 13-13 Fig. 12. y

j Figure 14 is a'fragmentary top plan view partlyin section, ofthe lubricator shownin Figs. 12 and-13. 'i

\ Figure 15 is a fragmentary vertical'sectiou taken on line15-15,Fig. 12." ,yf

' Figure 16'is a front view ofa form of screen head similar to Vthat shown in Fig. 6,"butof '65 slightly different construction. Figure` 17 is an end view of a form ofwick that shovvninY lligs.` 1, 2'and'4, and showing the parts in the position iii-"which they 'are 7o assembled, but not clamped together ready foruse. f f

Figure 18 isa perspective view of the wick and wick holder shown in Fig. 17 in its com.'- 'pleted form ready for use. 75 "Figure l19 is aside view'of another form ofwick and wick holder which may be advantageously employedin the form ofmy'lubricatorf illustrated in Figs. 1 and 2. L

'.*Figure 20 is a'fragmenta'ry ,vertical sec- $0 tion, on an enlarged scala-showing 'the upper end ofk the' wick` tube, filling YValve and top of the -lubricato'r reservoir. v

Similar characters of referenceindicate like parts in thek several ligures of the drawyS5 lngs- 1 i Referring to Figs. 1l and 2, the numeral 20 represents the upper section ,or body of the Alubricatorwhich contains oneform of my invention,"W hich body is preferably made' of 00 metal, although not necessarily so. -This body has generally the shape of a disk which has its axisarranged vertically and the same is provided on the lower part of its periphery 'with anexternal annular flange 21. Below '95 this body is arranged a reservoir or tank22 whichv is adapted to contain.. a quantity Vof lubricant which is adapted by thisinstrunient to be vaporized and delivered by the suction of vthe engine into. 'the fuelv intake of the -*H30 Yshown in Figs. 1 and 12.

nected to the under-side of the lubricator body so as to permit ofre'adily cleaning the 'v interior of the reservoir when this is necessary, and also rendering the under-side ofthe body accessible for purposes whichwill hereinafter appear.

Y IIn order to form atight joint between this reservoir and the lubricator20, a gasket or packing ring 23 is interposed between the upper'end of the reservoir and the under side of the body 20, as shown in Figs. 1 and 12. On the upper part of the periphery of the tank 22the same is provided with an Vexternal annular flange 24 which is preferably flush with the corresponding flange 21 on thefbody20. Thenumerals 25 represent thetwo side sections of a clamping ring, and the numeral 26 the rear'section of the clamping ring which is adapted to embrace the two flanges 21 and 24vof the body and reservoir, for which kpurpose these ring sections are made in the form of channel-shaped bands which have their concave sides facing inwardly and Vreceive the flange-s 2l and 24 of the body and reservoir. Upon drawing these several vring sections together theysecurely hold the .body and reservoir together so as to form a leak-tight joint therebetween, which 'actionis promoted' by making the lower side of the'flange 24 on the reservoir, inclined or beveled as shown in 27, and correspondingly inclining the lower flange 28 of each ofthe clamping rinfr sections, as best Ihe rear .clamping ring section -26 is provided at its opposite ends with laterally -projecting supporting arms 29 which are adapted to be secured to the adjacent part of the engine cylinder or some other stationarypart of the engine by means of bolts orother fastenings.

At the inner or rear ends of the side .sections 25 of the clamping ring, the same are 4'provided with laterally yprojecting arms 30 -which are adaptedto be securedto the arms 29 of the rear section 26 bythe same bolts which fasten the arms' 29 tothe engine.v On the'front endsof the sidesection 25, the saine are Vprovided with forwardly projecting lugs 31 which are adapted to-be yconnected by means of a' bolt 32,y which latter upon being tightened, draws the side sections 25 together and causes the opposingperipher'al portions bf the body 20 and lthe reservoir 22 to be tightly gripped by the'clamping ring sections'andf reliably heldinvplac'e so that there wi-llibe no Ydisturbance in the functioning of clamping bolt 32 may again be tightened for holding theparts inthe proper position.

Insteado'fconstructing the supporting and clamping bracket in 'three pieces as shown in Fig. 1Q, thesame maybe constructed in the form of a ring which'has two sections 33,

33, the rear endsfof which are pivotally connected by means of a hinge 34, whileV the front ends thereof are detachably connected by means ofV a bolt 35,.connecting forwardly projecting lugs 36 on the front end of the sections 33, as shown in Fig. 11. In this case the two ring sections 33, 33 are provided with rearwardly projecting supporting arms 37 which may be connected by bolts or otherwise, with a stationary part of the engine, in aY manner similar to that described with reference to the bracket construction shown in Fig. 10.

Another form of bracket is shown in Fig. 3 in which case the ring 38 is made in one continuous piece, butsplit at its front side so that the samecan be sprung apart to permit` of4 introducing flanges 21, 24 of the body and reservoir into the channel of this ring, after which this ring may be tightened upon the body and reservoir by means of bolts passing through forwardly projecting lugs 39, on the front ends of the split part of this rings In this case, the rear part of the ring 38 is provided with rearwardly projecting supporting arms 40, similar to those shown in the construction illustrated in Fig. l1, formounting the bracket on a stationary part of the engine. In both the constructions shown in Figs. 3 and l1, the body and reservoir `of the lubricator'are capable of being wholly detached from the bracket and also turned about a vertical axis in order to adapt the lubricator to any peculiar conditions which maybe present when installing it on some particular automobile or gas engine. Within thecentral part of the body 20, the same is provided with a vaporizing chamber 4l which has an air inlet 42 'for external air onone side thereof, an outlet 43 for vaporizedfair on its diametrically opposite side, anda wick seat 44 extending from the top of this chamber downwardly along transverse opposite sides`thereof,to the underside of thebody 20. The numeral 45 represents an'upright -wick which may beconstructed of ,any suitable fibrous material which produces a capillary action, such as .feltk and, which in the present instance-has the form of an upright cylinder, theA lower end of which projects downwardly into the reservo-1r so as to be immersed in the body of lubricating oil, contained therein, while the upper end thereof engages with the seat 44 .ofthe vaporizing chamber so as to form a fibrous partition which extends across the entire vaporizing chamber, so that no air can pass through this vaporizing chamber from the inlet to the outlet thereof except that Iwhic passes through the fibrous wick.

In operation the capillary actionof the wick raises the liquid lubricant from the reservoir into the upperpart of the vwick in the manner of a lamp wick, and the external air entering through the inlet 42 ofthe vaporizing chamber, passes through theoilsaturated end of the wick,y so as to` become laden with oil vapors, land this laden air is conducted in the form o'favapor from the outlet 43 of the vaporiziiig chamber to the intake of the gasrengine, where the same mingles with the combustible fuel anc is' conveyed therewith tothe firing space of the engine, where thislubricant operates tol lubricate the contactingsurface of the cylinder and piston while the explosiveifuel operates to produce the power for moving the pistons. This wick 45 may be supported on the body of the lubricator in any suitable man-V ner, but this support is preferably so `constructed that the wick can be' removed in case it becomes clogged or worn out, and replaced by another. The kkmeans shown in Fig. l for thus supporting the wick45 are constructed as follows: j r v, f

AArranged in the upper part of the lubricator body is a renewing chamber 46 which communicates with thel upper fend, ofthe vaporizing chamber 41 throughthe medium of the wick seat 44` while its upper end is closed by means of removable screw plug 47. This wick renewing chamber is somewhat larger in diameter than the opening in itsbottom whereby it communicates with the vaporizing chamber. so as te form anupwardlv facing shoulder 48 around the wick seat 44. To the upper end of the wick 45is secured a disk 49 consisting preferably of a circular piece of wire fabric which is of larger diameter than the kwick 45. so that the marginal part of this screen 49 overhangs the sides of the wick and engages with the shoulder 48. thereby forming a stop as well as a support for the wick, which limits the downward movement of the latter in the seat 44 and into the lubricant reservoir.

This screen 49 may be connected with'the wick in various ways, for example by means of a coupling wire 50 extending vertically through the center of the wick and thecentral part of the screen 49, 4and provided at its a filtering device whereby the air which `is drawn fromthe exterior atmosphere through the wick and delivered to the intake of the E gas engine, due tothe vacuum created in the engine cylinder while the engine is in operation. The construction of the means for thus supplying the reservoir with oil,aiidthe means for filterino the air supplied to the wick, shown in Figs. 1 and 2, are constructed as follows:

Thel numeral 53 represents a cylindrical oil replenishing valve seat extending. hori rzontally from theinlet 42 of the vaporizing chamber to one side of the'lubricator body and provided near the outer end of its upper part with anupwardly` opening inlet port 54 and nearV the inner end of its underside with an outlet port 55, which opens into the upper part of the reservoir. Rotatable within thecylindrical'seat 53 -is a tubular valve vwhich communicates at its 'inner end with the air inlet 42 of the vaporizing' chamber,

while its outer end is provided with a iiltering device through which air is adapted to pass from the exterior of the lubricator f through the valve 56 into the `vaporizing Adjacent to one side ofits outer part, the valve 56 is provided with a'laterally chamber.

frs

The relative ar- Y with the body port 54 and its outlet port 58 registers with the body port 55 at the same "115 time, as shown in Fig. l, thereby causing oil which is poured into the port 54 to be conducted through tlie port 57, tubular valve 56, port 55, and body port 58 to the interior of the reservoir.

When sufhcient oil has been' introduced into the reservoir, the valve 56 is turned so that its ports 57 and 58 are out of register with vthe ports 54 and' 55 of the body, whereby communication between the interior of the valvel and the external atmosphere and the interior of the reservoir are cut off, as shown by .dotted lines in Fig. l, and no further oil can be introduced intothe'reser-4 1,30

voir.

The filtering device which is mounted on the outer end of the replenishing `valve 56 valve 56 in engagement with the inner sidey of the screen 59, as shown in Fig. 1. The screen 59 is preferably of a larger diameter than thevalve 56, and bears with its marginal .edge portion against Vthe adjacent eX- ternal surface of thelubricator body 20, 'and the same is secured to the louter end of the valve 56 by means of two lugs `6'1- arranged on the diametrically opposite edge portions of the valve 56, and passing outwardly through notches 62 in the edge of the screen 59 and bent `orcrimped against the outer side of this screen as shown best in Figs. 1, 9 `and 12, thereby reliably connecting the valve 56 and the screen 59 in asimple and eiiicient manner. f

The filtering plug 60 is preferably secured to the screen59 by means which also serve to turn the valve 56 into and out of its oper` ative position. 'As shown in Figs. 1, 2, 6, 7, 9, .12 and 13, the means for this purpose consist of 'a handle 63 engaging with the outer side ofthe screen 59 and provided with two spurs or lugs 64 which passinwardly through corresponding openings Ain the screen 59 'and filtering plug 60, and are clinched or upset against the inner sideof Y this plug, thereby x reliably holding the handleon the valve 56 and also retaining the screen 59 and filter plug 60 in'engagement with each other. By reason of the engagement of the lug 6'1 with the notches 62 in the screen 59, the latterl is compelledl to turn with the valve 56 upon'manipulating the handle k63. f

I'n order to prevent the valve 56 from being withdrawn from its seat 53 when in its operative position, a stop lug 65 is provided on :the exterior of the body 2O so' as to engage'with the lower part of the outer side of the 'screen 59, when the valve 56 is in its closed position. Vhen it is desired to remove the valve 56 from its seat 53, this valve may be turned so that one of its notches 62 registers with the stop lug 65 and then the respective notch 62 which is of greater width than the stop lug 65 will permit the outward passage of the screen 59 over the lug' 65 and the withdrawal of the valve 56' from its seat. In like manner this valve may again be reassembled with the body of the lubricator by the reversal of this operation. In Fig. 6 the screen 59 is provided with twov openings 66 yfor the vpassage ofthe lugs or prongs 64, but if desired, this disk as shown in Fig. 16,imay be provided with a single opening 67 for the passage of both prongs` of the handle 63, and as shown inFigs. 8, 12, the filter plug 60 may also be provided with a single opening 68 for the passage of both prongs 64 of the handle 63. l

During the operation of the lubricator, the valve 56 is turned so las to close the oil replenishing ports 54 and 55 and at this time the external air passes through the filter screen 59 and the filter plug 60, thereby separating any dust from the air before it reaches the upper part of the oil-laden wick, thereby preventing the wick from becoming clogged with dust and insuring its operation for Vaporizing the air withr oil for a considerable time before the wick becomes clogged with dirt and requires either cleaning .or renewal in order to restore the lubricator to its maximum eiliciency. Y

In order to regulate the amount of oil vapor laden air which passes through the outlet 43 from the vaporizing chamber 41 to the gas engine, a. regulating valve is provided which as shown in Fig. 1, may consist of a needle valve 69 which is adapted to move across the. outlet 43 so as to obstruct this passage Amore or less, for which purpose this needle valve is providedV with an external screw'thread 70 engaging with an internally threaded opening 71 in the valve body, and a linger piece72 at its outer en d, whereby the same maybe turned for adjusting the position of the needle valve, and the capacity of the outlet 43. f

In order to enable theoperator to determine whether the lubricator is in working condition, a sight passage is provided as a part of the conduit through which the vaporized air is conducted after leaving the vaporizing chamber, and before reaching the intake ofthe gas engine. This sight passage is preferably formed in a sight tube 73 of transparent glass, which communicatesl at its inner end withthe outlet 43y of the vaporizing chamber, while its outer end communicates with a coupling nipple 74 leading to the conduit whereby the vaporized air is delivered tothe intake'of the engine. In the construction shown in Fig. 1, this sight tube has its central part intermediate of the ends thereof exposed through a sight opening 75 formed in the upper part of the lubricator body, while the inner end of this sight glass is arranged Within a lpocket 76 on the lubricator body and bears against a packing vring 77 arranged at the bottom of the pocket 76 and varound the passage43, while the outer end of the tube 73 bears against the inner end of the coupling nipple'74 through the middle of a packing ring 78. Loosening of the coupling nipple 7 4 is prevented by a lock nut 79 applied to this nipple and engaging the outery side of the valve body, as'shown in Fig. `1.

In order to .prevent anyy air from being trapped in the upper part of theoil reservoir which otherwise might interfere with the filloil therein to the upper part of the same which extends across the path of the air as the latter passes from the inlet 42` to the outlet 43 of the vaporizing chamber. For this purpose a suction passage 81- is provided in the body 20 which extends from the vaporizing chamber on the outlet side thereof tothe renewing chamber 46, as shown in Fig. 1. It'follo'ws from this that the vacuum which is produced in the vaporizing chamber due to the suction of the engine, will also cause a vacuum inthe wick renewing chamber 46 and thereby produce an upward suctionon the wick which will expedite the risingaction of the oil there in and aid capillary attraction so that ample oil will always be present in the upper part of the wick, and furnish an adequate amount 0f oil in finely dividedv form, which is taken up by the air passing through the wick to be later on carried to the engine forlubricating purposes.

Instead. of constructingvthe wick of tubular form as shown at 45 in Figs.` 1 and 2, this wick may be constructed of a plurality` of strands 82 which are doubled'upon themselves, and connected at'the turn by means of a band` or tie 88 with each i other and with the screen 49, as shown in Fig. 19.

A. wick of' this form can be passed downwardly through the wick seat 44 so that the lower end of these strands areimmersed in the liquid lubricant while the screen 49 rests upon the shoulder 42 and retainsthe upper part of the wick across the central-'part of the vaporizing chamber 41 so that it' .will obstruct the path of the air andi compel the same to pass through 'the upper part lof the wick and remove'the oil particles therefrom for use in lubricating the engine.y J

Another form of wickisshown in' 13, 17 and 18, in which casethe'wick 84 is made flat in a manner similar to a lamp wick and the same is held in place so that its lower part is immersed in thelubricating oil within the reservoir while itsupperend isextended across the path ofv thel air in the vaporizing chamber. rThe holding of the wick in this position is effected in this case by means of a tubular holder 85 which is preferably made of sheet metal and of rectangular form'in cross section, so as to fit the cross sectional shape of the wick which is enclosed thereby.V

One of the flat sides of this wick 'holder is provided with a longitudinal slot A86 and both of the flat sides of this holder are pro-- videdfat their upper ends with openings-87, 88 which are in line with each other'so as to expose a considerable portion of the upper end of the wick which is arranged within the v'aporizing chamber, and on a horizontal line with'the inlet and outlet of this chamber,vso that the airv entering through the inlet is compelled to pass through the wick and pick up the oil there-in before it can escape as oilladen air through the outlet of the -vaporizinwcharnber, and serve to lubricate the'engineto. which this oil laden air is delivered. The wick holder; in this instance' engages its 'opposite vkvertical edges with seats 89 formed on transversely opposite sides of the vaporizing chamber and the upper vend of the holder engages with a socket 90 formed in the toplof the vaporizing chamber as shown in Fig. 12. The wick 84' is preferably placed withinthe ,holder V85 whilethe flanges 911 on opposite? sides of its slot 86 are widely .separated, las shown in Fig. 17, after which these flanges are pressed 'inwardly so as to t close against'the wick, as shown in Figs. 13 and 18,

. thereby retainingthe wick and holder against displacement relative toeachother.

In order to prevent the wick holder from` becoming displaced in the body of the'lubriycator 'when' the llatter is in use alug or spur 92 is preferably formed at the lower edgek of one of the side openings of the wick holder, which` is adapted to engage with the adjacent part of the bottom of the. vaporizing chamber, as shown in Figs. 12 and 13, and thereby arrest-the downward movement .of the wick holder on the lubricator body. For the purpose of enabling this spurV 92 to ,clear the guide-way when assembling r theA parts,

this spur is made onthe solid side wall of` theholderso as to enable Athe spur-to bedelected inwardly by pressure, together with the vintervening part 'of the wick so that this spurfcank clear thewickseat 89, and when the wickholder has been raised aY suliicient extent inthe body, the expansion .of this holderwill projectl the spur 92 over the adjacent part of the -bottom of the v aporizing chamber and therebyhold the parts in the proper rela-4 tive position. o o

For the purpose vof removing the wick holder from the lubricator body, the flat walls of the holder. arefirstpressed inwardly" and the adjacentpart of the wick is compressed suiiciently to disengage the spur 92 from the bottom of the vaporizing chamber, after which the wick holder together with the'wick, can be readilywithdrawn and replaced by a new one. In the preferred construction, the slotted side of the wick holder is arranged on the inner side of the va porizing chamber, as shown in Figs. 12 and With the form of the invention shown'in Figs.,12-19 and20 it has been found that it and the oil reservoir 22.

is' effected by thefrestricted openingr 8() which V connects the. vaporizing chamber 41 -and the reservoir 22 land by the' slot 86 in the wick holder 85, this .slot 86forming a restricted passage'between the reservoir 22 and the interior ofthe valve 56. These passages 80 and`86 essentially form a restricted air bypassaround the wick 84 and the restriction of this by-pass isdeterm'ined by the size of the passage 80. The provision of this by-pass formed by the passagesk 80,86 around the vwick, tendslto'balance or equalize the pressure on opposite sides of the wick and also balance the'velocitv'of the airf'on opposite sides of thewick. 'By so by-passing a part of the air around the wick and maintaining balanced or 'uniform 'pressures and velocities on'opposite sides thereof, the feed of oil from the wickis substantially constant regardless of variations in the velocity and vacuum in the intake manifold and therefore uniformly feeds a constant quantity of oil at all engine speeds. Without the provision of thisl restricted 'by-pass formed bythe passages 80, 86- the feeding of'oil would be substantially proportional to the manifold vacuum so that there would be an excess of oil at-l'ow engine speeds 'when the manifold vvacuum is great and insufficient oil Vfed at high engine speeds.

f By byp'assi'ng the air through the reservoir 22, a-balanc'e is obtained between the vapor chamber 41 and the reservoir 22,and this prevents oil fromb'eing suckedup the/Wick and insures that thefiow of oil up Ythis'vvicl:v

is due solely to capillary action. Since the movement ofthe oil up the wick through capillary action is constant it follows :that-by balancing the pressures'on the outlet 'side of the wick and in the reservoir 22 through the provision ofthe restrictedV passage 80, the supplying'of oil to the upper: end of the wick willbe constant vat 'all times and that this balancing of 'pressures further tends to effect aruniform' feed of oil at all engine speeds.

'f Y It has also been found that the size of the passage 80' determines the amount of oil fed since the' size of this passage regulates' the effective sizeof theQby-pass around the wick and hence the amount of oilfed.

' In Figl, the needle valve 69 is arranged on an incline and is retained in position solely bythe frictional engagement of its screw thread with that of the lubricator body. If desired, however, this valve maybe arranged vertically, and a detent device may be provided as shown in Figs. 12, 14and 15, for the purpose of'preventing accidental displacement of theneedle valve and a disturbance in the regulationorow of the lubricant-laden air to the engine. They detent device which is preferably employedfor this purpose consists of a `U-shaped strip of spring metal, one leg I,of which forms a jaw 93 which is adapted to engage with the knurled linger piece `97 ofv the yneedle valve, while the other log 94 is pushed downwardly into an undercut or T-shaped seat 95, formed on the upper central part of the lubricator body, as shown inFigs. i12, 14V andV 15. The leg 94 is preferablyl interlocked with the vaporizer body by means of a punch mark 96 which enters the adjacent part ofthe body, as shown in Figs. v12 and 15, and thereby reliably connects these parts and preventsthe same from becoming disengaged duringthe vibration of theautomobile on which the lubricator is mounted.

Althoughv the detent 93, upon engaging the head 97.0f the needle valve, operates to hold the'same against turning while the lubricator is in'use, it is nevertheless possible to overcome the resistance of this detent by finger pressure in order to turn the needle valve one way or the other when it is desired to change the position of the same to suit different conditions. I

As a Whole, this lubricator comprises comparatively few parts, which are of simple construction, which vare capable of being produced andV assembled at low cost. The lubricator' in its completed form is very efficient in operation and notv liable to get out of order, andthe same can yalso be very readily taken apart and `re-assembled when required for inspection, cleaning or repairing.

Y I claim: f g 1. A lubricator of the character described, comprising a body having a vapor chamber `which is provided withv an air inlet and a vapor outlet and through which air is adapted to pass from-said inlet'to said outlet, an oil supply reservoir, a wick/having one part arranged in said oil reservoir so as to become saturated with oil while another part of the wick is arranged across the path ofthe air in said vapor chamber and the air is com pelled to pass through the wick and become charged with-vaporizedoil, and a bracket for detachabl-y connecting said body and reservoir and supporting the same.

2. A lubricator of the character-described, comprising a body having a vapor chamber provided with aninlet andr a vapor outlet, and an external flange, an oil reservoir arranged below said body and provided with an externalV ange, and means for connecting VMiO said body and reservoir comprising a channel-shaped clamping ring adapted to receive the flanges of said body and reservoir, and supporting arms projecting laterally from said ring.

3. A lubricator of the character described, comprising a body having a vapor chamber provided with an air inlet vand a vapor outlet and an upright seat extending across said chamber, an oil reservoir arranged below the body, a wick having one end arranged in said reservoir, and its other end arranged in said chamber, and a holder for said wiclr engaging said seat, i said holder being provided with openings to permit the passage or air through said wick and with a longitudinal slot on one or its sides which intersects the respective opening` therein.

t. yAlubricator of the character described, comprising a body having a vapor chamber provided with an air inlet and a vapor outlet and an upright seat extending across said chamber, an oil reservoir arranged below the body, a wick having one end arranged in said reservoir and its other end arranged in said chamber, and a holder for said wick engaging said seat, said holder being provided with openings to permit the passage of air through said wick and with a lip atthe lower edge of one of said openings which is adapted to engage the adjacent lower part of said chamber.

5. A lubricator of the character described, comprising a body provided with a vapor chamber having an air inlet and a vapor outlet, a circular valve seat leading to said chamber, and upper and lower oil ports arranged in the upper and lower parts of the body, at opposite ends of said seat, an oil reservoir arranged below the body, a wick arranged in said reservoir and in said chamber, and a hollow rotary valve arranged in said seat and n having ports on opposite sides and ends thereof adapted to register with the ports of said body. y

6. A lubricator or the character described, comprising ar body provided with a vapor chamber having an air inlet and a vapor outlet, a circular valve seat leading'to said chamber, and upper and lower oil ports arranged in the upper and lower parts of the body at opposite ends of said seat, an oil reservoir arranged below the body, a wick arranged in said reservoir and in said chamber, a hollow rotary valve arranged in said seat and having ports on opposite sides and ends thereof adapted toregister with the ports of said body, and a screen arranged at the outer end of said valve.

7. A lubricator of the character described, comprising a body provided with a vapor chamber having an air inlet and a vapor outlet, a circular valve seat leading to said chamber, and upper and lower oil ports arranged in the upper and lower parts of the body at opposite ends of said seat, an oil reservoir arranged below theibody, a'wick arranged in said reservoir and inl said chamber, a hollow rotary valve arranged in said seat and having ports on4 opposite sides and ends thereof adapted to .register with the ports of said body, said hollow rotaryvalve Jforming an air passage coinmunicatingLy with said vapor chamber, andmeans for intercepting dust arranged at the outer end of said valve.

A lubricator-ofrthe character described, comprising a body lprovided with a vapor chamber having an air inlet and a vapor outlet `andan yundercut `slot in its top, and oil reservoirarranged below the body,V a wick arranged in thek reservoir and in said chamber, a needle valvehaving a screw connection with said body andadapted to control said vapor outlet and havinga linger piece,'and a spring -detent having one end arranged in said undercut slot and its opposite end Aengaging with said ingerpiece. Y 9. A lubricator of the character described, comprising a bodyiprovided with a vapor chamber having an air inlet and a vapor outlet andan undercutslot in itsv top,anV oil reservoir arrangedbelow the body, a wick arranged in the reservoir and in said chamber, a needle valve having a screw connection with said body and adapted to control said vapor outlet land having a finger piece, anda spring detent having one end arranged in. said undercuty slot and its lopposite end engaging with said linger piece,and a punch mark on said fdetent engaging with said body.

10. A lubricator of the character described, comprising a body having a vapor chamber which is provided with an air inlet and a vapor outlet andy through which air is adapted to pass from 'said inlet to said outlet, an oil supply reservoir and a relatively compact wick having one part arranged in said oil reservoir so. as to become saturated with oil while another part of the wick is arranged across the pathof the air in said vapor chamber and the air is compelled to pass through the wiclr'and become charged with vaporized oil, said body being provided with a vent leading from the oil reservoir to the outlet side ofthe vapor chamber, whereby substantially uniform relative pressures are maintained in said oil reservoir and the outlet side of said vapor chamber.

11. A lubricator ot the character described, comprising a body having a vapor chamber which is provided with a gas inlet and a vapor outlet and through which gas is adapted to pass from said inlet to said outlet, a substantially unobstructed liquid supply reservoir arranged adjacent said chamber, means actuated through the velocity of the air passing through said chamber for charging said air withliquid .drawn from said reservoir, and a restricted bypass for bypassing a part of the air from said inlet to said outlet through said reservoir and around said liquid chargics ing means whereby aA substantially uniform velocity of air passing said oil Vcharging means is maintained at alll pressures at said outlet. o o l2. A device of the character described, including a body forming-a chamberhaving a gas inlet and an outlet, Va liquid supply reservoir arranged adjacent said chamber, a relatively compact wick having one part ary ranged in said reservoir so as to become saturated with liquid'while another part of said wick is arranged across said chamber and through which gas passing through said chamber is compelled to pass and means providing a restricted by-pass from said inlet to said outlet around said wick and through said reservoir and whereby substantially balanced pressures are maintained on opposite sides of said wick and in said reservoir. Y

13. A lubricator of the character described, comprising a body having a vapor chamber provided with an air inlet and a vapor outlet and an upright seat extending across said chamber, an: oil reservoir arranged below the body, a wick having one end arranged in said reservoir and its other end arranged in said chamber, and a holderV for said wick engaging said seat, and comprising a tube which receives said wickand is Vprovided with openings on its opposite sides which are in line with said chamber.

In testimony whereof I, hereby aiix my signature.

' VERE R. DECROW. 

